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103878 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include material: STEEL COMP 1112 OVERALL, body_type: SOLID, head_type: SOLID, drive_end_style: RAISED SQUARE, thread_direction: RIGHT-HAND EXTERNAL, nominal_thread_size: 0.25 INCHES EXTERNAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-044-4577, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
103878
NSN: 4730-00-044-4577
FSC: 4730
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialSTEEL COMP 1112 OVERALL
body_typeSOLID
head_typeSOLID
drive_end_styleRAISED SQUARE
thread_directionRIGHT-HAND EXTERNAL
nominal_thread_size0.25 INCHES EXTERNAL IN
part_name_assigned_by_controlling_agencySQUARE HEAD PUPE PLUG
NSN4730-00-044-4577
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 103878 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
13218E0122-13Interchangeable
interchangeable cross-reference
interchangeable
5406-P-4Interchangeable
interchangeable cross-reference
interchangeable
5M6213Interchangeable
interchangeable cross-reference
interchangeable
103878Interchangeable
interchangeable cross-reference
interchangeable
10F4Interchangeable
interchangeable cross-reference
interchangeable
PU181PGC1ANDPU181APGC1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 103878?
103878 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace 103878?
There are 24 known substitutes for 103878: 13218E0122-13, 5406-P-4, 5M6213 and 21 more. Substitute compatibility should be verified for your specific system.
Is 103878 still available?
103878 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026